Field of the Invention
[0001] The invention relates to a speaker according to the preamble of claim 1.
Background of the Related Art
[0002] FIG.1 is a partial view illustrating a cellular phone with a conventionally used
micro speaker and a coin type vibration motor embedded therein. Recently, consumers
desire to purchase a cellular phone that has the functions of producing at least 16-chord
or 40-chord polyphonic ring tone and displaying colors. This needs a micro speaker
having a range of 17 Phi or more. Since the micro speaker and a vibration motor are
separately made for use in conventional cellular phones, however, they should be provided
individually in the interior of the cellular phone. As shown in FIG. 1, a cellular
phone 3, which has basic specifications of black and white LCD and 16-chord or less
sound output, needs a substantially large area for installing a vibration motor 2
and a micro speaker 1 therein. Also, in order to add the functions of providing the
micro speaker with a range of 17 Phi or more and displaying colors, there is a need
for ensuring a relatively large area within the cellular phone 3.
[0003] To solve this problem, there has been provided a micro speaker itself having a vibration
function by Korea and Japan in recent years.
[0004] The configuration of the conventional vibration speaker will be described in detail
hereinafter with reference to FIG. 2.
[0005] FIG.2 is a sectional view of the conventionally used vibration speaker.
[0006] Referring to FIG. 2, a lower plate 10 is provided with an air hole 11 from which
a sound is generated, in the center thereof and with a vibration plate 12 that is
spaced apart by a predetermined distance therefrom on the upper portion thereof in
such a manner as to be vibrated by means of a plurality of first elastic support parts
14. The vibration plate 12 is provided with a pair of coils 13 facing with each other
on the upper portion thereof, each of which is in the shape of a generally semi-arc.
There is also provided an upper case 15 for covering the upper portion of the lower
plate 10. The upper case 15 is provided with a magnet 16 that is disposed on the bottom
surface thereof to correspond to the pair of coils 13 in such a manner as to cover
the pair of coils 13. And, the upper case 15 is disposed on the upper portion of the
lower plate 10 in such a manner as to be able to be vibrated by means of a plurality
of second support parts 17.
[0007] A reference numeral 18 denotes a generally flexible cover that is adapted to connect
the outer peripheries between the lower plate 10 and the upper case 15, such that
it prevents foreign materials from entering a space between the lower plate 10 and
the upper case 15.
[0008] In operation, when an alternating current (AC) having a low frequency is applied
to the pair of coils 13, the polarities of the coils 13 and the magnet 16 disposed
on the bottom surface of the upper case 15 are in turn opposite to each other, such
that the upper case 15 and the magnet 16 are in a seesaw situation (the left and right
parts on the drawing move up and down) relative to the center of the magnet 16 on
which the two polarities meet, thereby making it possible to generate vibration.
[0009] However, the above-mentioned vibration speaker has the following problems: first,
the alternating current of the low frequency corresponding to the resonance frequencies
of the first and second elastic support parts 14 and 17 should be applied to said
vibration speaker; and second, the elastic modulus of the first and second elastic
support parts 14 and 17 are varied over time, such that the frequency of the alternating
current applied has should be appropriately varied. That is to say, the first and
second elastic support parts that are vibrated when the alternating current having
a frequency of about 147 Hz is applied to the pair of coils 13, but as a predetermined
period of time passes, they may not be vibrated due to the variation in their elastic
modulus. Therefore, there is a need for a driving part for use in the vibration speaker
that expects the variation of the elastic modulus with the lapse of time to convert
the initially applied alternating current into the alternating current having a frequency
corresponding to the expected elastic modulus variation.
[0010] EP 1 191 809 A2 discloses a speaker according to the preamble of claim 1 in which
the vibration plate is attached to the top surface of the frame, while the yoke is
part of a rotor fixed on a rotor shaft which is rotatably supported by a bottom plate
of the frame. An annular rotor permanent magnet is fixed at a peripheral part of the
yoke, while an annular stator with stator coils composing a synchronous motor with
the rotor is secured at the frame with radial distance from the rotor permanent magnet.
The yoke comprises a lower part and a central top part with a speaker permanent magnet
in between.
SUMMARY OF THE INVENTION
[0011] It is the technical problem underlying the invention to provide a speaker that substantiatty
obviates one or more of the problems of the prior art mentioned above and in particular
is capable of achieving the miniaturization of portable equipment having a micro speaker
by decreasing the space in the portable equipment occupied by a conventional micro
speaker and coin type vibration motor and/or capable of maintaining its initial performance
for a relatively long period of time, without having an additional driving part.
[0012] The invention solves this probem by providing a speaker having the features of claim
1.
[0013] Advantageous embodiments of the invention are given in the subclaims.
[0014] Additional advantages, objects, and features of the invention will be set forth in
part in the description which follows and in part will become apparent to those having
ordinary skill in the art upon examination of the following or may be learned from
practice of the invention. The objectives and other advantages of the invention may
be realized and attained by the structure particularly pointed out in the written
description and claims hereof as well as the appended drawings.
[0015] According to an aspect of the present invention, there is provided a speaker with
a built-in direct current (DC) motor embedded therein for selectively generating sound
and vibration, the speaker comprising: a speaker part including; a yoke having a hole
formed at the center thereof, a first ring-shaped magnet mounted on the top surface
of a peripheral portion of said yoke in such a manner as to be positioned coaxially
with the center axis of said yoke, a ring-shaped upper plate mounted on the top surface
of said first magnet in such a manner as to be positioned coaxially with the center
axis of said yoke, and adapted to form a magnetic gap between a bent portion of said
yoke and said upper plate to thereby constitute a magnetic circuit for generating
magnetic flux together with the yoke and the first ring-shaped magnet, a vibration
plate attached to the top surface of said upper plate at the circumferential end thereof
in such a manner as to be positioned coaxially with the center axis of said yoke,
and a generally cylindrical voice coil attached to the bottom surface of said vibration
plate and inserted into said magnetic gap, a direct current motor part including;
a first lower plate fixedly attached to the bottom surface of said peripheral portion
of said yoke, a flexible printed circuit board disposed on said first lower plate,
and having a hole formed at the center thereof and a brush transmitting a driving
signal, a second ring-shaped magnet mounted on the top surface of said first lower
plate in such a manner as to be positioned coaxially with the center axis of said
yoke, a rotary shaft fitted at one end thereof into said hole of said yoke and fitted
at the other end thereof into said hole of the center of said flexible printed circuit
board, and an eccentric rotor rotatably mounted on said rotary shaft and adapted to
rotate in response to the driving signal generated from said brush; and a frame adapted
to support said speaker part and said direct current motor part.
[0016] Preferably, the frame may have a flexible printed circuit board mounted on one side
thereof, the flexible printed circuit board having a power feed terminal electrically
connected to the voice coil and the brush connected to the eccentric rotor, respectively,
and adapted to supply a driving signal to the voice coil to generate sound and a driving
signal to the brush to generate vibration due to the rotation of said eccentric rotor.
[0017] Preferably, the direct current (DC) motor further includes a motor's upper case which
has a hole at the center of an inner surface thereof and contains said rotary shaft
having an one end thereof fitted into said hole, said rotor and said second magnet;
and a motor's lower case which is connected to the bottom of said upper case and has
said second magnet thereon, such that said direct current motor is placed in a space
defined by the bottom surface and the inner lateral walls of the central portion of
said yoke and the top surface of said lower plate.
BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The above and other objects, features and advantages of the present invention will
be apparent from the following detail description of the preferred embodiments of
the invention in conjunction with the accompanying drawings, in which:
[0019] FIG.1 is a partly cut view illustrating a cellular phone with a conventional micro
speaker and a coin type vibration motor embedded therein;
[0020] FIG.2 is a cross sectional view of a conventional vibration speaker;
[0021] . FIG.3 is a sectional view illustrating a speaker with a built-in DC motor according
to a first embodiment of the present invention;
[0022] FIG. 4 is an exploded perspective view illustrating the speaker in FIG. 3; and
[0023] FIG. 5 is a sectional view illustrating a speaker with a built-in DC motor according
to a second embodiment of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
[0024] Reference will now be made in detail to the preferred embodiments of the present
invention, examples of which are illustrated in the accompanying drawings.
[0025] FIG.3 is a sectional view illustrating a speaker with a built-in DC motor according
to a first embodiment of the present invention, and FIG. 4 is an exploded perspective
view illustrating the speaker in FIG. 3.
[0026] Referring to FIGS. 3 and 4, the speaker with the built-in DC motor according to the
first embodiment of the present invention includes a speaker part and a direct current
(DC) motor part.
[0027] First, for the configuration of the speaker part, a first ring-shaped magnet 140
is mounted on the top surface of the peripheral portion 150a of a yoke 150, and a
ring-shaped upper plate 130 is mounted on the top surface of the first magnet 140
such that a magnetic gap is formed between a bent portion of the yoke 150 and the
upper plate 130. In this case, the first magnet 140 and the upper plate 130 are bonded
to each other by different types of bonding materials that have been diluted, such
that the yoke 150, the first magnet 140 and the upper plate 130 are laminated in the
order thereof. At this time, the yoke 150 has a hole formed at on the center of the
bottom surface of the central portion 150b thereof to receive one end of a rotary
shaft 210.
[0028] The height of the yoke 150 preferably is the same as that of the upper plate 130
bonded to the first magnet 140, which enables the magnetic gap to be effectively formed.
A voice coil 120, which is attached to the bottom surface of a vibration plate 110
fixed at the circumferential end thereof to the upper plate 130, is inserted into
the magnetic gap formed between the yoke 150 and the first magnet 140. In more detail,
the upper plate 130, the first magnet 140 and the yoke 150 constitute a magnetic circuit,
and the voice coil 120 is inserted into the magnetic gap formed in the magnetic circuit.
[0029] Also, an upper case (not shown in the drawing), which serves to protect the vibration
plate 110 and forms a plurality of sound holes through which the sound generated by
the upward and downward vibration of the vibration plate 110 is outputted to the outside,
may be fixed to the outer circumferential surface of the upper plate 130 or a frame
160.
[0030] The voice coil 120 which receives a driving signal from portable equipment forms
an alternating current rotary magnetic field. As a result, there is generated a force
acting upward and downward between the voice coil 120 and the magnetic circuit. Consequently,
the vibration plate 110 fixed to one end of the voice coil 120 becomes vibrated upward
and downward, thereby generating a dilatational wave which, in turn, produces sounds.
[0031] Next, for the DC motor part, a rotary shaft 210 is disposed in the lower space of
the central portion 150b of the yoke 150, i.e., at the inner center of the reentrant
portion of the yoke 150. The rotary shaft 210 is fitted at one end thereof into the
hole formed at the center of the central portion 150b of the yoke 150, and fitted
mechanically at the other end thereof into the hole formed on a flexible printed circuit
board 250 mounted on a lower plate 240. In this case, a second magnet 230 and the
lower plate 240 may be bonded to each other by a bonding material that has been diluted
or by a coupling member such as a bolt.
[0032] The rotary shaft 210 is disposed vertically at the center of the rotor 220 such that
the rotor 220 is rotatable. In this case, the rotor 220 is an eccentric rotor that
has different masses between its left and right sides relative to its center. When
the eccentric rotor 220 rotates by its eccentricity, it generates vibration. The eccentric
rotor 220 is manufactured in such a fashion that a plurality of bundles of coils are
disposed, in a unsymmetrical manner with respect to the rotary shaft 210, on the upper
portion of the printed circuit board with copper foils formed on the both surfaces
thereof. The copper foil on the bottom surface of the printed circuit board serves
as a rectifier and receives a driving current from a brush 255.
[0033] A second ring-shaped magnet 230 is mounted on the top surface of the lower plate
240 in such a manner as to be positioned coaxially with the center axis of the rotary
shaft 210 and spaced apart by a predetermined distance from the rotor 220. Also, a
flexible printed circuit board 250 is disposed on the lower plate 240, for receiving
a driving current from the portable equipment and supplying the received driving current
to the coils of the rotor 220. The flexible printed circuit board 250 has the brush
255 mounted thereon, which comes in contact with the rectifier disposed on the lower
portion of the rotor 220 to supply the driving current to the coils positioned at
the upper portion of the rotor 220.
[0034] The frame 160 is formed on the outer circumferential surfaces of the upper plate
130, the first magnet 140, the yoke 150, and the peripheral portion of the top surface
of the lower plate 240 by using an injected material made of a non-magnetic plastic
resin. The frame 160 may be formed on the peripheral portion of the top surface of
the lower plate 240, and preferably, has a protrusion formed vertically at the upper
and lower portions thereof, respectively, in such a manner as to support the upper
portion of the upper plate 130 and the lower portion of the lower plate 240. The non-magnetic
plastic resin is injected under the pressure in a range of 65 to 75 kg/cm
2 at a temperature in the range of 220 to 240 °C, thereby forming the frame 160.
[0035] The front end of the one side of the frame 160 is soldered in such a manner as to
be electrically connected to the voice coil 120 and the brush 255 and is then connected
to a flexible printed circuit board 250a to which driving signals for driving the
voice coil 120 and the brush 255 are applied. In more detail, the flexible printed
circuit board 250a has a power feed terminal mounted thereon which is electrically
connected to the voice coil 120 and has a power feed terminal mounted therebelow which
is electrically connected to the rotor 220, i.e., the brush 255, such that it supplies
the driving signals to the voice coil 120 and the rotor 220.
[0036] The driving signal applied to the voice coil 120 through the power feed terminal
of the flexible printed circuit board 250a corresponds to a sound signal like a bell
sound for informing a user of an incoming call, and the driving signal applied to
the rotor 220 through the power feed terminal of the flexible printed circuit board
250a corresponds to a direct current (DC) for generating vibration. In case of folder
type portable equipment, on the other hand, the speaker with the built-in DC motor
according to the present invention is installed in the folder part, such that it can
be used as a receiver. In this case, the driving signal applied to the power feed
terminal of the voice coil is the speech signal of a calling party.
[0037] The speaker with the built-in DC motor according to the first embodiment of the present
invention as constructed above installs the DC motor in a reentrant portion that has
been not used in the external magnet type speaker having an outer diameter of 17 phi
or more, thus not to cause any increase in the whole space thereof.
[0038] FIG. 5 is a cross sectional view illustrating a speaker with a built-in DC motor
according to a second embodiment of the present invention.
[0039] Referring to FIG. 5, the speaker with the built-in DC motor according to the second
embodiment of the present invention is configured such that a DC motor is coupled
to an external magnet type speaker. More particularly, in the speaker with the built-in
DC motor, the DC motor is disposed in the interior of the reentrant portion that has
been not used in the external magnet type speaker, whereby it functions as a typically
used speaker as well as a vibration generator, without any increase in the volume
thereof.
[0040] In the configuration of the external magnet type speaker, first, a first ring-shaped
magnet 145 and an upper plate 135 are sequentially mounted on the top surface of a
peripheral portion 155a of a yoke 155, such that a magnetic gap is formed between
a bent portion of the yoke 155 and the upper plate 135. In this case, the first magnet
145 and the upper plate 135 are bonded to each other by different types of bonding
materials that have been diluted, such that the yoke 155, the first magnet 145 and
the upper plate 135 are laminated in the order thereof.
[0041] The height of the yoke 155 preferably is the same as that of the upper plate 135
bonded to the first magnet 145, which enables the magnetic gap to be effectively formed.
A voice coil 125, which is attached to the bottom surface of a vibration plate 115
fixed at the circumferential end thereof to the upper plate 135, is inserted into
the magnetic gap formed between the yoke 155 and the first magnet 145. In more detail,
the upper plate 135, the first magnet 145 and the yoke 155 constitute a magnetic circuit,
and the voice coil 120 is inserted into the magnetic gap formed in the magnetic circuit.
[0042] Also, an upper case (not shown in the drawing), which serves to protect the vibration
plate 115 and forms a plurality of sound holes through which the sound generated by
the upward and downward vibration of the vibration plate 115 is outputted to the outside,
may be fixed to the outer circumferential surface outer periphery of the upper plate
135 or a frame 165.
[0043] The voice coil 125 which receives a driving signal from portable equipment forms
an alternating current rotary magnetic field. As a result, there is generated a force
acting upward and downward between the voice coil 125 and the magnetic circuit. Consequently,
the vibration plate 115 fixed to one end of the voice coil 125 becomes vibrated upward
and downward, thereby generating a dilatational wave which, in turn, produces sounds.
[0044] Next, a coin type DC motor 300 is disposed in the lower space of the central portion
155b of the yoke 155 and preferably placed coaxially with the center axis of the yoke
155. The rotor of the coin type DC motor 300 is an eccentric rotor that has different
masses between its left and right sides relative to its center. When the eccentric
rotor 220 rotates by its eccentricity, it generates vibration. The eccentric rotor
220 is manufactured in such a fashion that a plurality of bundles of coils are disposed,
in a unsymmetrical manner with respect to the rotary shaft 210, on the upper portion
of the printed circuit board with copper foils formed on the both surfaces thereof.
[0045] While the motor part of the speaker according to the first embodiment of the present
invention shown in FIGs. 3 and 4 is integrally formed with the speaker part in the
form of components, the coin type DC motor 300 of the speaker according to the second
embodiment of the present invention shown in FIG. 5 is provided in the form of a finished
product. Therefore, the speaker according to the second embodiment of the present
invention includes additionally a motor's upper case 310 and a motor's lower case
320 for surrounding the coin type DC motor 300. To this end, the rotary shaft is fixed
at one end thereof to the motor's upper case 310 of the coin type DC motor 300, the
rotary shaft is fixed at the other end thereof to the motor's lower case 320 of the
coin type DC motor 300, the motor's lower case 320 of the coin type DC motor 300 is
fixed to the lower plate. Also, the lower plate 245 may be provided with a hole for
exposing the power feed terminal electrically connected to a brush of the coin type
DC motor 300 to the outside.
[0046] However, it is preferable that the power feed terminal of the coin type DC motor
300 is extended to the same side as the power feed terminal of the voice coil 125
of the speaker coupled thereto such that the connection with the portable equipment
is made with ease. Therefore, the following connecting methods may be used: a) the
power feed terminal of the voice coil 125 and the power feed terminal of the coin
type DC motor 300 are disposed on the lower portion of the lower plate 245; b) in
order for the power feed terminal of the coin type DC motor 300 to be extended to
the outside of the frame 165 to be formed at the outside, an extending member such
as a printed circuit board (PCB) circuit or a conducting wire is disposed on the lower
plate 245; and c) the power feed terminal of the coin type DC motor 300 is molded
substantially longer than the width of the peripheral portion 155a of the yoke 155
such that it can be extended to the outside of the frame 165. In the preferred embodiment
of the present invention, there is described the case where the power feed terminal
of the coin type DC motor 300 is extended to the outside of the frame 165, as explained
in the above b) and c).
[0047] The driving signal applied to the voice coil 125 corresponds to a sound signal like
a bell sound for informing a user of an incoming call, and the driving signal applied
to the power feed terminal of the coin type DC motor 300 corresponds to a direct current
(DC) for generating vibration. In case of folder type portable equipment, on the other
hand, the speaker with the built-in DC motor according to the present invention is
installed in the folder part, such that it can be used as a receiver. In this case,
the driving signal applied to the power feed terminal of the voice coil is the speech
signal of a calling party.
[0048] The frame 165 is formed on the outer circumferential surfaces of the upper plate
135, the first magnet 145, the yoke 155, and the peripheral portion of the top surface
of the lower plate 245 by using an injected material made of a non-magnetic plastic
resin. The frame 165 may be formed on the peripheral portion of the top surface of
the lower plate 245, and preferably, has a protrusion formed vertically at the upper
and lower portions thereof, respectively, in such a manner as to support the upper
portion of the upper plate 135 and the lower portion of the lower plate 245. The non-magnetic
plastic resin is injected under the pressure in a range of 65 to 75 kg/cm
2 at a temperature in the range of 220 to 290 °C, thereby forming the frame 165.
[0049] The speaker with the built-in DC motor according to the second embodiment of the
present invention as constructed above installs the DC motor in the reentrant groove
that has been not used in the external magnet type speaker having an outer diameter
of 17 phi or more, thus not to cause any increase in the whole space thereof.
[0050] Although the speakers with the built-in DC motors according to the preferred embodiments
of the present invention have been not shown in the drawings, they may be configured
in a shape of a general oval. As the oval speaker is installed easily in the portable
equipment, it is widely used at present. The case where the speaker with the built-in
DC motor takes the oval shape is as follows: 1) all of the central and peripheral
portions of the external magnet type yoke have an oval shape; 2) the external magnet
type yoke itself has a generally circular shape but the external housing itself has
a generally oval shape.
In case of the above 1), all of the first magnet, the upper plate, the vibration plate,
the voice coil, and the lower plate that are coupled to the external magnet type yoke
are formed in the oval shape. Therefore, the ring shape that is mentioned in the present
description and the claims may be interpreted as referring to generally circular and
oval ring shapes. Also, the external magnet type yoke may be interpreted as referring
to both of the yoke having the oval shape and the yoke having the circular shape.
[0051] As described above, a speaker with a built-in coin type DC motor according to the
preferred embodiments of the present invention is configured such that a micro speaker
is installed in the coin type DC motor for generating vibration therein, thereby selectively
generating sound and vibration.
[0052] Therefore, the speaker of the present invention decreases the space in the portable
equipment occupied by a conventional micro speaker and a coin type vibration motor,
thereby achieving the miniaturization of portable equipment. In addition, the speaker
of the present invention is capable of maintaining its initial vibration performance
for a relatively long period of time, without having an additional driving part.
[0053] While this invention has been described in connection with what is presently considered
to be the most practical and preferred embodiments, it is to be understood that the
invention is not limited to the disclosed embodiments, but is intended to cover various
modifications, variations or equivalents within the scope of the appended claims.
1. A speaker with a built-in motor embedded therein for selectively generating sound
and vibration, comprising:
- a speaker part including
a yoke (150) having a hole formed at the center of the bottom thereof,
a first ring-shaped magnet (140) mounted on the yoke to be positioned coaxially with
the center axis of said yoke,
a ring-shaped upper plate (130) mounted on the top surface of said first magnet in
such a manner as to be positioned coaxially with the center axis of said yoke, and
adapted to form a magnetic gap between a bent portion of said yoke and said upper
plate to thereby constitute a magnetic circuit for generating magnetic flux together
with the yoke and the first ring-shaped magnet,
a vibration plate (110) positioned coaxially with the center axis of said yoke, and
a cylindrical voice coil (120) attached to the bottom surface of said vibration plate
and inserted into said magnetic gap;
- a motor part, including
a lower plate (240),
a second ring-shaped magnet (230) positioned coaxially with the center axis of said
yoke,
a rotary shaft (210), and
an eccentric rotor (220) rotatably mounted on said rotary shaft and adapted to rotate
in response to a driving signal; and
- a frame (160) adapted to support said speaker part and said direct current motor
part,
characterized in that
- the motor part is a direct current motor part,
- the first ring shaped magnet (140) is mounted on the top surface of a peripheral
portion of said yoke,
- the vibration plate (110) is attached to the top surface of said upper plate at
the circumferential end thereof,
- the lower plate (240) is fixedly attached to the bottom surface of said peripheral
portion of said yoke,
- a flexible printed circuit board (250) is disposed on said lower plate, having a
hole formed at the center thereof and a brush transmitting the driving signal,
- the second ring-shaped magnet (230) is mounted on the top surface of said lower
plate, and
- one end of the rotary shaft (210) in inserted in said hole of said yoke and the
other end of the rotary shaft is fitted into said hole of the center of said flexible
printed circuit board.
2. The speaker according to claim 1, wherein said frame has a flexible printed circuit
board mounted on one side thereof, said flexible printed circuit board having a power
feed terminal electrically connected to said voice coil and said brush connected to
said eccentric rotor, respectively, and adapted to supply a driving signal to said
voice coil to generate sound, and supply a driving signal to said brush to generate
vibration due to the rotation of said eccentric rotor.
3. The speaker according to claim 1, wherein said direct current motor further includes
a motor's upper case which has a hole at the center of an inner surface thereof and
contains said rotary shaft having an one end thereof fitted into said hole, said rotor
and said second magnet; and a motor's lower case which is connected to the bottom
of said motor's upper case and has said second magnet thereon, such that said direct
current motor is placed in a space defined by the bottom surface and the inner lateral
walls of the central portion of said yoke and the top surface of said lower plate.
1. Lautsprecher mit einem darin eingebetteten Einbaumotor zum selektiven Erzeugen von
Ton und Vibration, der beinhaltet:
- einen Lautsprecherteil mit
einem Joch (150) mit einer in der Mitte des Bodens desselben ausgebildeten Öffnung,
einem ersten ringförmigen Magnet (140), der auf dem Joch so angebracht ist, dass er
koaxial zu der Mittelachse des Jochs positioniert ist,
einer ringförmigen oberen Platte (130), die auf der Oberseite des ersten Magnets in
einer solchen Weise angebracht ist, dass sie koaxial zu der Mittelachse des Jochs
positioniert ist, und so ausgelegt ist, dass ein magnetischer Zwischenraum zwischen
einem gebogenen Teil des Jochs und der oberen Platte gebildet ist, um dadurch einen
magnetischen Kreis zur Erzeugung eines magnetischen Flusses zusammen mit dem Joch
und dem ersten ringförmigen Magnet zu bilden,
einer Vibrationsplatte (110), die koaxial zu der Mittelachse des Jochs positioniert
ist, und
einer zylindrischen Schwingspule (120), die an der Unterseite der Vibrationsplatte
angebracht und in den magnetischen Zwischenraum eingesetzt ist,
- einen Motorteil mit
einer unteren Platte (240),
einem zweiten ringförmigen Magnet (230), der koaxial zu der Mittelachse des Jochs
positioniert ist,
einer Drehwelle (210) und
einem exzentrischen Rotor (220), der drehbar auf der Drehwelle angebracht und so ausgelegt
ist, dass er in Reaktion auf ein Treibersignal rotiert, und
- einen Rahmen (160), der so ausgelegt ist, dass er den Lautsprecherteil und den Gleichstrommotorteil
trägt,
dadurch gekennzeichnet, dass
- der Motorteil ein Gleichstrommotorteil ist,
- der erste ringförmige Magnet (140) auf der Oberseite eines peripheren Bereiches
des Jochs angebracht ist,
- die Vibrationsplatte (110) auf der Oberseite der oberen Platte am Umfangsende derselben
angebracht ist,
- die untere Platte (240) fest an der Unterseite des peripheren Bereichs des Jochs
angebracht ist,
- eine flexible Leiterplatte (250) auf der unteren Platte angeordnet ist, wobei eine
Öffnung in der Mitte derselben ausgebildet ist und eine Schleifbürste das Treibersignal
überträgt,
- der zweite ringförmige Magnet (230) auf der Oberseite der unteren Platte angebracht
ist und
- ein Ende der Drehwelle (210) in die Öffnung des Jochs eingesetzt ist und das andere
Ende der Drehwelle in die Öffnung der Mitte der flexiblen Leiterplatte eingepasst
ist.
2. Lautsprecher nach Anspruch 1, dadurch gekennzeichnet, dass der Rahmen eine flexible Leiterplatte aufweist, die an einer Seite desselben angebracht
ist, wobei die flexible Leiterplatte einen mit der Schwingspule elektrisch verbundenen
Leistungszufuhranschluss beziehungsweise die mit dem exzentrischen Rotor verbundene
Schleifbürste aufweist und dafür ausgelegt ist, der Schwingspule zur Erzeugung von
Ton ein Treibersignal zuzuführen und der Schleifbürste zur Erzeugung von Vibration
aufgrund der Rotation des exzentrischen Rotors ein Treibersignal zuzuführen.
3. Lautsprecher nach Anspruch 1, dadurch gekennzeichnet, dass der Gleichstrommotor des Weiteren ein oberes Motorgehäuse, das eine Öffnung in der
Mitte einer Innenseite desselben aufweist und die Drehwelle enthält, deren eines Ende
in die Öffnung eingepasst ist, den Rotor und den zweiten Magnet sowie ein unteres
Motorgehäuse beinhaltet, das mit dem Boden des oberen Motorgehäuses verbunden ist
und den zweiten Magnet darauf aufweist, so dass der Gleichstrommotor in einem Zwischenraum
platziert ist, der durch die Unterseite und die inneren lateralen Wände des mittieren
Bereichs des Jochs und die Oberseite der unteren Platte definiert ist.
1. Haut-parleur avec moteur intégré compris dans celui-ci destiné à générer sélectivement
un son et une vibration, comprenant :
- un élément de haut-parleur comprenant
une culasse (150) possédant un orifice formé au niveau du centre du fond de celle-ci,
un premier aimant en forme d'anneau (140) monté sur la culasse de manière à être positionné
coaxialement avec l'axe central de ladite culasse,
un plateau supérieur en forme d'anneau (130) monté sur la surface supérieure dudit
premier aimant de telle manière à être positionné coaxialement avec l'axe central
de ladite culasse, et adapté pour former un entrefer magnétique entre une partie courbée
de ladite culasse et ledit plateau supérieur pour constituer ainsi un circuit magnétique
destiné à générer un flux magnétique conjointement à la culasse et au premier aimant
en forme d'anneau,
un plateau de vibration (110) positionné coaxialement avec l'axe central de ladite
culasse, et
une bobine acoustique cylindrique (120) attachée à la surface inférieure dudit plateau
de vibration et insérée dans ledit entrefer magnétique ;
- un élément de moteur, incluant
un plateau inférieur (240),
un deuxième aimant en forme d'anneau (230) positionné coaxialement avec l'axe central
de ladite culasse,
un arbre rotatif (210), et
un rotor excentrique (220) monté de façon à tourner sur ledit arbre rotatif et adapté
pour tourner en réponse à un signal d'entraînement ; et
- un châssis (160) adapté pour supporter ledit élément de haut-parleur
et ledit élément de moteur à courant continu,
caractérisé en ce que
- l'élément de moteur est un élément de moteur à courant continu,
- le premier aimant en forme d'anneau (140) est monté sur la surface supérieure d'une
partie périphérique de ladite culasse,
- le plateau de vibration (110) est attaché à la surface supérieure dudit plateau
supérieur au niveau de l'extrémité circonférentielle de celui-ci,
- le plateau inférieur (240) est attaché fixement à la surface inférieure de ladite
partie périphérique de ladite culasse,
- une carte de circuit intégré flexible (250) est agencée sur ledit plateau inférieur,
possédant un orifice formé au niveau du centre de celui-ci et un balai transmettant
le signal d'entraînement,
- le deuxième aimant en forme d'anneau (230) est monté sur la surface supérieure dudit
plateau inférieur, et
- une extrémité de l'arbre rotatif (210) est insérée dans ledit orifice de ladite
culasse et l'autre extrémité de l'arbre rotatif est ajustée dans ledit orifice du
centre de ladite carte de circuit imprimé flexible.
2. Haut-parleur selon la revendication 1, dans lequel ledit châssis possède une carte
de circuit imprimé flexible montée sur un côté de celui-ci, ladite carte de circuit
imprimé flexible possédant une borne d'alimentation électrique connectée électriquement
à ladite bobine acoustique et ledit balai connecté audit rotor excentrique, respectivement,
et adaptée pour délivrer un signal d'entraînement à ladite bobine acoustique pour
générer un son, et délivrer un signal d'entraînement audit balai pour générer une
vibration due à la rotation dudit rotor excentrique.
3. Haut-parleur selon la revendication 1, dans lequel ledit moteur à courant continu
comprend en outre un boîtier supérieur du moteur qui possède un orifice au niveau
du centre d'une surface intérieure de celui-ci et contient ledit arbre rotatif possédant
une extrémité de celui-ci ajustée dans ledit orifice, ledit rotor et ledit deuxième
aimant ; et un boîtier inférieur du moteur qui est connecté au fond dudit boîtier
supérieur du moteur et possède ledit deuxième aimant sur celui-ci, de sorte que ledit
moteur à courant continu est placé dans un espace défini par la surface inférieure
et les parois latérales intérieures de la partie centrale de ladite culasse et la
surface supérieure dudit plateau inférieur.